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Finding the Fourth Proportional to 9,069.63, 12,487.44 and 8,239.15

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Solution

The fourth proportional to 9,069.63, 12,487.44 and 8,239.15 is: 11,344.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,069.63 : 12,487.44 = 8,239.15 : x
  2. Step 2: Convert to fraction form
    9,069.63/12,487.44 = 8,239.15/x
  3. Step 3: Cross multiply
    9,069.63x = 12,487.44 × 8,239.15
  4. Step 4: Simplify right side
    9,069.63x = 102,885,891.28
  5. Step 5: Solve for x
    x = 102,885,891.28/9,069.63
  6. Step 6: Final answer
    x = 11,344.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.